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blsea [12.9K]
3 years ago
11

Pls help!!! Or I can’t pass my class in time!

Mathematics
2 answers:
Korvikt [17]3 years ago
8 0

D.

I Hope this helps!

liraira [26]3 years ago
8 0
Answer: D.

Explanation: −4
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Luba_88 [7]
I need to see a picture
7 0
3 years ago
Please please help mane :((( give explanation plsss :(((
Deffense [45]

Answer:

2x - 1 > 4x + 6 \\ 2x - 2x - 1 > 4x - 2x + 6 \\  - 1 > 2x + 6 \\  - 6 - 1 > 2x \\  - 7 > 2x \\  \frac{ - 7}{2}  > x

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3 0
3 years ago
Solve 3x² + 4x = 2. (2 points)
uysha [10]

Answer:

Step-by-step explanation:

As it is a second order equation, it means that it has two possible answers and they are x_1 and x_2.

The famous quadratic formula for solving any second order equation is the following:

x_{1} = \frac{-b + \sqrt{b^2 - 4 ac}}{2a}\\x_{2}=\frac{-b - \sqrt{b^2 - 4 ac}}{2a}

Where a is the coefficient of x^2, b is the coefficient of x, and c is the free term. In other words,

a = 3\\b=4\\c=-2

as the equation should be in the following form:

a x^2 + bx+c = 0

Therefore the possible answer should be the following,

\frac{-4 + \sqrt{4^2 - 4*3*(-2)}}{2*3}=\frac{-4 +\sqrt{16 + 24}}{6} =\frac{-4 + \sqrt{40}}{6}=\\ \frac{-4 + \sqrt{4*10}}{6} = \frac{-4 + 2\sqrt{10}}{6}\frac{2*(-2 + \sqrt{10})}{2*3} = \frac{-2 + \sqrt{10}}{3}

by dividing the numerator and denominator by 2, we can deduce the following,

6 0
2 years ago
How solve this <br> x+y=5<br> X-y=7
Misha Larkins [42]
elimination\ methode\\\\\underline{+\left\{\begin{array}{ccc}x+y=5\\x-y=7\end{array}\right}\ \ \ \ |add\ both\ sides\ of\ the\ equations\\.\ \ \ \ \ \ 2x=12\ \ \ \ \ |divide\ both\ sides\ by\ 2\\.\ \ \ \ \ \ \ \boxed{x=6}\\\\subtitute\ the\ value\ of\ x\ to\ the\ first\ equation:\\\\6+y=5\ \ \ \ |subtract\ 6\ from\ both\ sides\\\boxed{y=-1}\\\\Answer:\boxed{\left\{\begin{array}{ccc}x=6\\y=-1\end{array}\right}
6 0
3 years ago
Find the value of X in the picture please
Over [174]

Answer:

The measure of the arc x is 130°

Step-by-step explanation:

we know that

The semi-inscribed angle is half that of the arc it comprises

so

65°=(1/2)[arc x]

solve for x

arc x=(2)(65°)=130°

8 0
3 years ago
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